AirHint found the following cheapest return flights from Singapore (SIN) to Istanbul (IST) in April 2026 (see full year).

Return flights

01 Apr - 07 Apr	Gulf Air
05 Apr - 11 Apr	Gulf Air
07 Apr - 18 Apr	Gulf Air
05 Apr - 17 Apr	AirAsia
05 Apr - 10 Apr	AirAsia
22 Apr - 26 Apr	Scoot
05 Apr - 08 Apr	AirAsia
11 Apr - 17 Apr	AirAsia
02 Apr - 17 Apr	AirAsia
02 Apr - 10 Apr	AirAsia
25 Apr - 08 May	AirAsia
29 Apr - 06 May	Singapore Airlines	direct
28 Apr - 08 May	AirAsia
28 Apr - 18 May	AirAsia
21 Apr - 08 May	AirAsia
28 Apr - 17 May	AirAsia
19 Apr - 08 May	AirAsia
24 Apr - 02 May	Turkish Airlines	direct

Also check the deals for one-way flights from Singapore to Istanbul in April.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Singapore to Istanbul in April from 417€

Return flights